The equation of a wave traveling along the positive x-direction is given by;
y = 0.25 x 10\(^{-3}\) sin (500t - 0.025x).
Determine the angular frequency of the wave motion.

If a sound wave goes from a cold air region to a hot air region, its wavelength will

The inside portion of part of a hollow metal sphere of diameter 20cm is polished. The portion will therefore form a